Mechanical Dimensions & Land Pattern (DFN-8-S(5x6))
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit DFN-8-S(5x6) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — TC4451VMF (DFN-8-S(5x6))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of TC4451VMF (DFN-8-S(5x6))?
Manufactured by MICROCHIP, the TC4451VMF is housed in a DFN-8-S(5x6) package with 9 pins and a 1.27 mm lead pitch, supporting a VCC supply range of 4.5V to 18V. Key pins include: 1 (VDD: Power Supply Input (VDD — 4.5V to 18V)), 2 (INPUT: Multiplexed I/O & Peripheral Pin INPUT (General)), 3 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 4 (GND: Ground Reference Pin (GND)), 5 (GND: Ground Reference Pin (GND)), 6 (OUTPUT/OUTPUT: Multiplexed I/O & Peripheral Pin OUTPUT/OUTPUT (General)).
What are the IPC-7351B PCB Footprint dimensions for TC4451VMF?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), TC4451VMF (DFN-8-S(5x6)) has a nominal body envelope of 5.00 × 6.00 mm, pitch e = 1.27 mm, and 9 copper pads plus a central exposed thermal pad (EPAD) of 4.00 × 2.30 mm with a 60% IPC-7525 windowed solder paste grid.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for TC4451VMF?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for TC4451VMF (MICROCHIP, DFN-8-S(5x6)) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (9 pins) & TC4451 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 4.5V to 18V domain (Max rating: 18.0V). |
| 2 | INPUT | Digital_IO | Signal terminal INPUT (I/O, 4.5V to 18V domain). Multiplexed alternate functions: INPUT. Supported peripheral buses: General. |
| 3 | NC | NC | Signal terminal NC (I/O, 4.5V to 18V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 4 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 5 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 6 | OUTPUT/OUTPUT | Digital_IO | Signal terminal OUTPUT/OUTPUT (I/O, 4.5V to 18V domain). Multiplexed alternate functions: OUTPUT/OUTPUT. Supported peripheral buses: General. |
| 7 | OUTPUT/OUTPUT | Digital_IO | Signal terminal OUTPUT/OUTPUT (I/O, 4.5V to 18V domain). Multiplexed alternate functions: OUTPUT/OUTPUT. Supported peripheral buses: General. |
| 8 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 4.5V to 18V domain (Max rating: 18.0V). |
| 9 | EP | GND | Bottom exposed die attach pad (EP) providing primary thermal conduction path to the PCB and low-inductance 0V ground return. |